International journal of cardiac imaging最新文献

{"title":"Magnetic resonance imaging of complex congenital heart disease.","authors":"S J Yoo,&nbsp;Y M Kim,&nbsp;Y H Choe","doi":"10.1023/a:1006180021670","DOIUrl":"https://doi.org/10.1023/a:1006180021670","url":null,"abstract":"<p><p>Current MR techniques enable both anatomical and functional evaluations of the heart. Although it is rarely used as a primary diagnostic tool in pediatric cardiology, it can be used as a valuable adjunct to echocardiography and angiography. MRI is particularly useful in clarification of morphology of complex congenital heart diseases. It is the most accurate method of determination of visceral and atrial situs. It is easy to evaluate the systemic and pulmonary venous connections that are very important for the Fontan type of operation, especially in patients with visceral heterotaxy. It facilitates demonstration of diminutive pulmonary arteries in patients with pulmonary atresia. It clearly demonstrates juxtaposition of the atrial appendages that is often missed by echocardiography. The anatomy of the twisted atrioventricular connections is much more clear in MRI than in echocardiography. It enables en face imaging of ventricular septal defect that provides a surgical view. We find en face imaging particularly helpful in patients with double inlet left ventricle and transposition of the great arteries where the size of the ventricular septal defect governs the blood flow into the aorta. It is often advantageous to echocardiography in defining the type of univentricular atrioventricular connections by demonstrating the position and topology of the rudimentary chamber in difficult cases. In double outlet right ventricle, the spatial relationship of the ventricular septal defect to the great arterial valves can be clearly defined by visualizing the ventricular septal defect and the outlet septum in the same imaging plane.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 2","pages":"151-60"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006180021670","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardiovascular flow patterns: what should we make of them?","authors":"D Saloner","doi":"10.1023/a:1006121126020","DOIUrl":"https://doi.org/10.1023/a:1006121126020","url":null,"abstract":"","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 2","pages":"97-8"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006121126020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardiovascular MR angiography.","authors":"M R Prince,&nbsp;J M Rubin","doi":"10.1023/a:1006219829366","DOIUrl":"https://doi.org/10.1023/a:1006219829366","url":null,"abstract":"","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 2","pages":"115-6"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006219829366","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New black blood pulse sequence for studies of the heart.","authors":"S Campos,&nbsp;V Martinez Sanjuan,&nbsp;J J Garcia Nieto,&nbsp;V Belloch,&nbsp;A Lucas,&nbsp;M J Masip,&nbsp;P Nogues,&nbsp;J C Martinez,&nbsp;G Zannoli,&nbsp;H Lejay,&nbsp;J Celma","doi":"10.1023/a:1006157928900","DOIUrl":"https://doi.org/10.1023/a:1006157928900","url":null,"abstract":"<p><p>The black blood concept is based on the signal void principle of the sequences in Spin Echo, SE or FSE, which are very useful for studying the mediastinum and heart. In this setting, new sequences are continuously introduced to eliminate the artifacts caused by breathing and heart movements. One such sequence is the Double-IR preparation Black Blood FSE. We report our experience in 97 patients, using this new pulse sequence to evaluate cardiac pathology, and establish comparisons with the conventional Spin Echo sequences. The study comprises mediastinal disease and aorta and heart explorations. We consider this new Double-IR preparation FSE sequence to be an excellent choice for evaluating chest, mediastinal and cardiac images. The sequence offers improved spatial resolution of both the vessels and other chest structures with respect to conventional Spin Echo imaging. With the exception of patients presenting severe heart problems, or in the presence of intense bradycardia, the required 16 cycles in apnea are well tolerated. The purpose of the present study is to present our initial results with this new pulse sequence as applied to cardiac pathology, in comparison with conventional Spin Echo imaging.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 2","pages":"175-83"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006157928900","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gadolinium contrast-enhanced three-dimensional MRA of peripheral arteries with multiple bolus injection: scan optimization in vitro and in vivo.","authors":"J J Westenberg,&nbsp;M N Wasser,&nbsp;R J van der Geest,&nbsp;P M Pattynama,&nbsp;A de Roos,&nbsp;J Vanderschoot,&nbsp;J H Reiber","doi":"10.1023/a:1006166330001","DOIUrl":"https://doi.org/10.1023/a:1006166330001","url":null,"abstract":"<p><p>In this study, a scanning protocol was developed to image the arterial bed of the pelvis and both legs along their entire length in patients with peripheral arterial disease, using standard hard- and software. Three adjacent stations are acquired consecutively, with some small overlap; per station; one Gadolinium contrast bolus is administered. The scanning protocol was optimized in an in vitro phantom study. The optimal flip angle was found to be 50 degrees. Also, the optimal scan delay was chosen to be equal to the arrival time of the contrast bolus thereby minimizing artifacts. Three contrast bolus injections showed sufficient enhancement of the vessels after image subtraction. Finally, stenosis quantification by manual caliper was performed by five observers in the MRA images and correlated with the percent diameter reduction determined by quantitative angiography from corresponding X-ray images. The results of the MRA measurements were reproducible and intra- and inter-observer variabilities were statistically non-significant (p = 0.54 and p = 0.12, respectively). Stenosis quantification performed by four observers showed a good correlation with the X-ray derived values (rp > 0.90, p < 0.02); the results from one observer were not significantly correlated. Five patients with proven peripheral disease were investigated with this new MRA scanning protocol. The images were of good quality which allowed adequate clinical evaluation; the original diagnoses obtained from X-ray examinations, were confirmed with MRA. In conclusion, peripheral arterial disease can be evaluated adequately with this MR scanning protocol.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 2","pages":"161-73"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006166330001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BMIPP compared with thallium redistribution.","authors":"J Taki,&nbsp;I Matsunari,&nbsp;K Nakajima,&nbsp;N Tonami","doi":"10.1023/a:1006192418782","DOIUrl":"https://doi.org/10.1023/a:1006192418782","url":null,"abstract":"<p><p>I-123 labeled methyl-branched fatty acid, BMIPP, has been used mainly in Europe and Japan for the evaluation of various cardiac diseases. BMIPP uptake abnormality is usually more prominent tan perfusion, representing discordant BMIPP uptake less than thallium. This finding is observed in various cardiac disease conditions such as acute myocardial infarction, stable and unstable angina, hypertrophic and dilated cardiomyopathies. Many BMIPP studies combined stress thallium imaging in patients with coronary artery disease and hypertrophic cardiomyopathy demonstrated that such discordant BMIPP uptake less than thallium is related to stress-induced ischemia as evidenced by reversible thallium defect after exercise. BMIPP imaging is able to detect metabolic alteration in the heart which is not available by perfusion imaging alone.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 1","pages":"49-59"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006192418782","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Future aspects of BMIPP.","authors":"N Tamaki,&nbsp;K Morita,&nbsp;E Tsukamoto,&nbsp;Y Kawai","doi":"10.1023/a:1006109022417","DOIUrl":"https://doi.org/10.1023/a:1006109022417","url":null,"abstract":"<p><p>Iodinated fatty acid compounds have an important role in early detection of myocardial abnormalities and provide insights into pathological states in the heart. Among them, 15-(p-iodophenyl)-3R,S-methyl pentadecanoic acid (BMIPP) has been most widely used providing excellent images of the left ventricular myocardium due to high myocardial uptake and long retention. The previous chapters have focused on the basic characters and clinical applications of this compound. However, the precise mechanisms of myocardial kinetics should be further investigated under various conditions. Most of the studies showed reduced BMIPP uptake relative to perfusion in a variety of myocardial disorders, whereas an increase in BMIPP uptake relative to perfusion is often reported. The potential mechanisms of such conflicting results are discussed, but basic studies should be performed to clarify such results in detail. There are a number of clinical values of this compound. Since alteration of fatty acid is observed in the repetitive ischemia, BMIPP can be used for detecting severe ischemic episodes. The concept of 'ischemic memory' imaging can be applied for patients with unstable or vasospastic angina at rest and for those with acute myocardial infarction with successful revascularization to identify the risk area. The discordant decrease in BMIPP uptake relative to perfusion is often seen in ischemic but viable myocardium, and therefore, the combined imaging of BMIPP and perfusion can be used for assessment of tissue viability. Furthermore, abnormal BMIPP uptake is most often observed in hypertrophic cardiomyopathy, and thus, this compound can be used for an early detection and differential diagnosis of the cardiomyopathy. Although BMIPP imaging seems to be quite promising in many fields, the number of patient data remain limited. In this respect, a multicenter study with a vast majority of patients is warranted to confirm these important values of BMIPP. In addition, this attractive tracer should be available all over the world to confirm its clinical value in the near future.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 1","pages":"79-89"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006109022417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardiac BMIPP imaging in acute myocardial infarction.","authors":"T Nakata,&nbsp;A Hashimoto,&nbsp;M Eguchi","doi":"10.1023/a:1006124014239","DOIUrl":"https://doi.org/10.1023/a:1006124014239","url":null,"abstract":"<p><p>Fatty acid metabolism functions as a major energy-producing system under aerobic conditions, but it is impaired immediately after myocardial ischaemia. This imaging can provide intracellular information which cannot be obtained by angiographical, perfusional or functional analysis. 123I-BMIPP and perfusion imagings in patients with acute myocardial infarction have demonstrated three different correlations between myocardial perfusion and fatty acid metabolism: concordant defects of perfusion and BMIPP which represent scar or non-viable tissue; lower BMIPP uptake relative to perfusion (perfusion-BMIPP mismatch) which implicates metabolically damaged, often dysynergic, but viable myocardium; and equivalently normal uptakes of perfusion and BMIPP in completely salvaged myocardium. Identification of these perfusion-metabolism correlations contributes to the detection of ischaemia-related myocardial injury in viable and non-viable myocardium, to the prediction of post-ischaemic or post-interventional functional recovery and to the identification of patients who have myocardium at ischaemic risk. Further clinical investigations might reveal more clearly the pathophysiological and prognostic implications of cardiac BMIPP imaging in patients with acute myocardial infarction.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 1","pages":"21-6"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006124014239","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BMIPP in angina pectoris.","authors":"S Nishimura,&nbsp;Y Ohta","doi":"10.1023/a:1006136300127","DOIUrl":"https://doi.org/10.1023/a:1006136300127","url":null,"abstract":"<p><p>Radionuclide imaging with BMIPP for assessment of myocardial metabolism can assist in clinical decision making in certain subsets of patients with coronary artery disease. In stable angina, abnormal BMIPP imaging and less BMIPP uptake than Tl-201 are more likely to be seen in the distribution of vessels with severe stenoses and related to regional wall abnormalities. BMIPP SPECT imaging is a promising approach in the evaluation of patients with suspected unstable angina during the pain-free period even after stabilization. Fatty acid metabolism is easily suppressed due to the abrupt onset of ischaemia. In addition, combined imaging with BMIPP and Tl-201 can provide insights into the understanding of abnormal metabolism in myocardium in stable and unstable angina. This review addressed the clinical applications of BMIPP imaging for evaluation of stable and unstable angina.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 1","pages":"35-9"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006136300127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21317818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Basic kinetics of 15-(p-iodophenyl)-3-R,S-methylpentadecanoic acid (BMIPP) in canine myocardium.","authors":"R Nohara,&nbsp;R Hosokawa,&nbsp;T Hirai,&nbsp;K Okuda,&nbsp;M Ogino,&nbsp;Y Fujibayashi,&nbsp;M Fujita,&nbsp;S Sasayama","doi":"10.1023/a:1006167713330","DOIUrl":"https://doi.org/10.1023/a:1006167713330","url":null,"abstract":"<p><p>BMIPP is a radioiodinated fatty acid analogue used for myocardial single photon emission CT (SPECT) imaging based on high cardiac fatty acid metabolism. In normal dogs, 74% of the injected BMIPP was instantly extracted and was then retained in 65.3%. The washout of the retained radioactivity was low, and most of the washout was alpha- and beta-oxidation metabolites. ATP concentration plays an important role in the myocardial uptake and retention of BMIPP. The ATP-dependent BMIPP uptake at the TG pool was strongly regulated by etomoxir with modifying mitochondrial beta-oxidation and subsequent ATP production. Thus, myocardial viability was reflected on the BMIPP uptake in acute ischemia. In spite of insignificant changes in early extraction and retention. BMIPP back diffusion (r = -0.92) and full-oxidation metabolite (r = 0.78) were correlated with the severity of ischemia. Mismatched region of BMIPP with flow (Tl-201) showed decreased metabolic enzymes such as citrate synthase and 3-hydroxyacyl-CoA dehydrogenase. These data suggest that BMIPP would be feasible for detecting cellular energy state from lipid metabolism.</p>","PeriodicalId":77179,"journal":{"name":"International journal of cardiac imaging","volume":"15 1","pages":"11-20"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1006167713330","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21318581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}